Doubly resonant sub-ppt photoacoustic gas detection with eight decades dynamic range

doi:10.1016/j.pacs.2022.100387

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	Doubly resonant sub-ppt photoacoustic gas detection with eight decades dynamic range
	Z. Wang; Q. Wang; H. Zhang; S. Borri; I. Galli; A. Sampaolo; P. Patimisco; V. L. Spagnolo; P. De Natale and W. Ren
刊名	Photoacoustics
	2022
卷号	27 页码:8
ISSN号	2213-5979
DOI	10.1016/j.pacs.2022.100387
英文摘要	Photoacoustic spectroscopy (PAS) based gas sensors with high sensitivity, wide dynamic range, low cost, and small footprint are desirable in energy, environment, safety, and public health. However, most works have focused on either acoustic resonator to enhance acoustic wave or optical resonator to enhance optical wave. Herein, we develop a gas sensor based on doubly resonant PAS in which the acoustic and optical waves are simultaneously enhanced using combined optical and acoustic resonators in a centimeter-long configuration. Not only the lower detection limit is enhanced by the double standing waves, but also the upper detection limit is expanded due to the short resonators. As an example, we developed a sensor by detecting acetylene (C2H2), achieving a noise equivalent absorption of 5.7 x 10(-13) cm(-1) and a dynamic range of eight orders. Compared to the state-of-the-art PAS gas sensors, the developed sensor achieves a record sensitivity and dynamic range.
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语种	英语
内容类型	期刊论文
源URL	[http://ir.ciomp.ac.cn/handle/181722/66575]
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	Z. Wang,Q. Wang,H. Zhang,et al. Doubly resonant sub-ppt photoacoustic gas detection with eight decades dynamic range[J]. Photoacoustics,2022,27:8.
APA	Z. Wang.,Q. Wang.,H. Zhang.,S. Borri.,I. Galli.,...&P. De Natale and W. Ren.(2022).Doubly resonant sub-ppt photoacoustic gas detection with eight decades dynamic range.Photoacoustics,27,8.
MLA	Z. Wang,et al."Doubly resonant sub-ppt photoacoustic gas detection with eight decades dynamic range".Photoacoustics 27(2022):8.